diff --git a/theme/bootstrapbase/less/moodle/blocks.less b/theme/bootstrapbase/less/moodle/blocks.less
index 69f1b19f5a7..5d5959ad06b 100644
--- a/theme/bootstrapbase/less/moodle/blocks.less
+++ b/theme/bootstrapbase/less/moodle/blocks.less
@@ -228,9 +228,15 @@
 .block_adminblock {
     .content {
         display: block;
+        margin: 0 10px;
         padding: 3px 5px;
+        width: auto;
     }
-    select {
-        max-width: 92%;
+    .singleselect {
+        display: block;
+        select.singleselect {
+            display: block;
+            width: 100%;
+        }
     }
 }
diff --git a/theme/bootstrapbase/style/moodle.css b/theme/bootstrapbase/style/moodle.css
index 0869e115743..08dbbd99735 100644
--- a/theme/bootstrapbase/style/moodle.css
+++ b/theme/bootstrapbase/style/moodle.css
@@ -12756,10 +12756,16 @@ body {
 }
 .block_adminblock .content {
   display: block;
+  margin: 0 10px;
   padding: 3px 5px;
+  width: auto;
 }
-.block_adminblock select {
-  max-width: 92%;
+.block_adminblock .singleselect {
+  display: block;
+}
+.block_adminblock .singleselect select.singleselect {
+  display: block;
+  width: 100%;
 }
 /**
  * Moodle forms HTML isn't changeable via renderers (yet?) so this